a4cd5630b0
non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
98 lines
3.6 KiB
C
98 lines
3.6 KiB
C
/* Definitions for Intel 386 running system V, using dbx-in-coff encapsulation.
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Copyright (C) 1992, 1995 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "i386/svr3gas.h"
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/* We do not want to output SDB debugging information. */
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#undef SDB_DEBUGGING_INFO
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/* We want to output DBX debugging information. */
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#define DBX_DEBUGGING_INFO
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/* Compensate for botch in dbxout_init/dbxout_source_file which
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unconditionally drops the first character from ltext_label_name */
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#undef ASM_GENERATE_INTERNAL_LABEL
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#define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
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sprintf ((BUF), "*.%s%d", (PREFIX), (NUMBER))
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/* With the current gas, .align N aligns to an N-byte boundary.
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This is done to be compatible with the system assembler.
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You must specify -DOTHER_ALIGN when building gas-1.38.1. */
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#undef ASM_OUTPUT_ALIGN
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#define ASM_OUTPUT_ALIGN(FILE,LOG) \
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if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
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/* Align labels, etc. at 4-byte boundaries.
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For the 486, align to 16-byte boundary for sake of cache. */
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#undef ASM_OUTPUT_ALIGN_CODE
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#define ASM_OUTPUT_ALIGN_CODE(FILE) \
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fprintf ((FILE), "\t.align %d,0x90\n", \
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1 << i386_align_jumps)
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/* Align start of loop at 4-byte boundary. */
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#undef ASM_OUTPUT_LOOP_ALIGN
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#define ASM_OUTPUT_LOOP_ALIGN(FILE) \
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fprintf ((FILE), "\t.align %d,0x90\n", 1 << i386_align_loops);
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/* Additional overrides needed for dbx-in-coff gas, mostly taken from pbb.h */
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/* Although the gas we use can create .ctor and .dtor sections from N_SETT
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stabs, it does not support section directives, so we need to have the loader
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define the lists.
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*/
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#define CTOR_LISTS_DEFINED_EXTERNALLY
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/* similar to default, but allows for the table defined by ld with svr3.ifile.
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nptrs is always 0. So we need to instead check that __DTOR_LIST__[1] != 0.
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The old check is left in so that the same macro can be used if and when
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a future version of gas does support section directives. */
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#define DO_GLOBAL_DTORS_BODY {int nptrs = *(int *)__DTOR_LIST__; int i; \
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if (nptrs == -1 || (__DTOR_LIST__[0] == 0 && __DTOR_LIST__[1] != 0)) \
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for (nptrs = 0; __DTOR_LIST__[nptrs + 1] != 0; nptrs++); \
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for (i = nptrs; i >= 1; i--) \
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__DTOR_LIST__[i] (); }
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/* Use crt1.o as a startup file and crtn.o as a closing file. */
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/*
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* The loader directive file svr3.ifile defines how to merge the constructor
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* sections into the data section. Also, since gas only puts out those
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* sections in response to N_SETT stabs, and does not (yet) have a
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* ".sections" directive, svr3.ifile also defines the list symbols
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* __DTOR_LIST__ and __CTOR_LIST__.
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*/
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC \
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"%{!r:%{!z:svr3.ifile%s}%{z:svr3z.ifile%s}}\
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%{pg:gcrt1.o%s}%{!pg:%{posix:%{p:mcrtp1.o%s}%{!p:crtp1.o%s}}%{!posix:%{p:mcrt1.o%s}%{!p:crt1.o%s}}} \
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%{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp}"
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#define ENDFILE_SPEC "crtn.o%s"
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#undef LIB_SPEC
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#define LIB_SPEC "%{posix:-lcposix} %{shlib:-lc_s} -lc -lg"
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